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Ostalloy 158

“The Best Tool in the House”

Ostalloy is a remarkable alloy that melts and works at a temperature no hotter than a cup of coffee. As a tool, it is used for the following:

  • Tool fixturing
  • Holding small parts to be machined
  • Tube shaping and bending
  • Nesting
  • Fixturing dies
  • Internal and external support for thin walled tools and parts

This alloy of bismuth, tin, lead and cadmium, a eutectic alloy with a sharply defined melting point of 158ºF, has proven itself in production processes the world over, and has found no equal to its special advantages. They are:

1) Ostalloy 158 does not shrink, but upon solidification it exhibits growth, which helps to lock it to the part to be machined.
2) Low melting temperature, requiring only a simple melting pot and a gas or electric heat source. It is 54ºF below the boiling point of water.
3) It is reusable many times.
4) Easily melted out in hot water.
5) It quickly solidifies.
6) Because of its low temperature, it creates almost no drosses.

Once you use Ostalloy 158, you will never be without it again.

Physical Properties of Ostalloy 158

Melting temperature °F

158

Weight (lbs/in.3

.339

Specific heat liquid*

.040

Solid

.040

Brinell hardness no.

9.2

Tensile strength (lbs/in.)

5990

Elongation in slow loading*

200


Loading (lbs/in.2)

 

   Maximum load 30 seconds*

10,000

   Maximum load 5 minutes*

4,000

Safe, sustained load

300


Composition (%):

 

Bismuth

50.0

Lead

26.7

Tin

13.3

Cadmium

10.0


Growth: time after casting:

 

6 minutes

+.0027

30 minutes

+.0045

1 hour

+.0051

5 hours

+.0051

24 hours

+.0051

21 days

+.0057

The above technical data represent predictable characteristics and are to be relied on only as a guide.

*Approximate values
Measurements in inches per inch, compared to Cold Mold Dimensions Test Bar ½² x ½² x 10²

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